- Theater
- Theatricals
- Their
- Theism
- Then
- Then and there
- Thenceforth
- There is room for improvement
- There you are
- Therefor
- Therefrom
- Thermal
- Thermal equator
- Thimble-rig
- Thin skinned
- Thing
- Think again
- Think big
- Think fit
- Think little
- Think well of
- Thinker
- Thiswise
- Thither
- Thiyyas
- Tholas
- Thong
- Thorium
- Thoroughfare
- Thoroughness
- Those
- Thou
- Though
- Thoughtful
- Three times five
- Three-quarter
- Threefold
- Threesome
- Threnody
- Thriller
- Thrips
- Throat-pain
- Throbbing
- Throe
- Tick over
- Ticket
- Tickling
- Ticklish
- Tide-table
- Tide-wave
- Till death
- Tillable
- Tilt
- Timber-line
- Time card
- Time frame
- Time was
- Tincture
- Ting
- Tinge
- Tinkle
- Tinned
- Tip staff
- Tipped
- Tipsy
- Titular
- To
- To set on foot
- To a certain extent
- To abstain from
- To ache
- To act wonderfully
- To amass
- To assess
- To associate
- To attack
- To be absorbed
- To be absorbed in
- To be determined
- To be frightened
- To be fulfilled to
- To be going to
- To be in the same boat
- To be offended
- To become able
- To become big
- To become complete
- To become enslavened
- To become full
- To become satisfied
- To begin
- To bet
- Tow
- To bid farewell
- To blame
- To bloat
- To borrow
- To get old
- To give birth
- To graze